CPC Main Group Additional Only
F02G 2253/00 Seals
10 direct subcodes
Child Classifications
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- F02G 2253/01 Rotary piston seals
- F02G 2253/02 Reciprocating piston seals
- F02G 2253/03 Stem seals
- F02G 2253/04 Displacer seals
- F02G 2253/06 Bellow seals
- F02G 2253/08 Stem with rolling membranes
- F02G 2253/10 Piston with rolling membranes
- F02G 2253/50 Liquid seals
- F02G 2253/60 Sealing of the lubrication circuit
- F02G 2253/80 Sealing of the crankcase
Top Applicants
Top 10 applicants by patent filingsfor class F02, 2013–2023, worldwide · Source: EPO PATSTAT
- ROBERT BOSCH DE 8,801
- FORD GLOBAL TECHNOLOGIES US 8,171
- GE (GENERAL ELECTRIC COMPANY) US 6,957
- HYUNDAI MOTOR COMPANY KR 5,390
- UNITED TECHNOLOGIES CORPORATION (UTC) US 5,250
- TOYOTA MOTOR CORPORATION JP 5,214
- TOYOTA MOTOR CORPORATION 4,149
- DENSO CORPORATION JP 3,400
- KIA MOTORS CORPORATION KR 3,388
- SAFRAN AIRCRAFT ENGINES FR 3,332